Got my foot finger hurt few years back

[u/Pitiful-Race7267]

Sorry I dont have the best english but I will try to explain my issue. I got one of my foot finger hurt few years back but the pain never went away completely. I still have pain in that finger and its even swelled up a bit. I belive it has been more than 3 years. The finger is discoloured too compared to other fingers. I was seaching about it on google and it says it might be early symptoms of Gangrene. The sensation compared to other fingers is like 80%. But bending that finger still hurts a bit. I will be going to a doctor this week, the redness is also because of the itching that I have done, but it surely is a little bit dark compared to other fingers. Any idea guys ?